Introduction to mill test certificate (EN 10204 2.1, 3.1, 3.2)
Mill Test Certificate(MTC),or Mill Test Report (MTR),is issued by a manufacturer to certify the chemical and mechanical features of a product and its compliance to the applicable norms and technical specifications.Typically,mill test certificates conform to the EN 10204 standard and are related to steel products.Certification of steel plates rolled in Europe is generally to EN 10204.The actual certificate will depend on the plate offered but will either be 3.1 or 3.2. A 3.1 or 3.2 MTC means that the actual plate or heat sold will have been tested and a Mill Test Certificate (MTC) will accompany the plate.
A mill test certificate to EN 10204 generally includes the following information:
- Manufacturer name
- Product name and dimensions
- Quantity covered by the certificate (example: tons, with heat numbers)
- Heat numbers and batch number (physically shown on the product as well)
- Final test result
- Dimensional measurements, to check compliance with allowed tolerances (example, for steel pipes: diameter, wall thickness, length, straightness)
- Material grade and applicable specification, including results of chemical and mechanical tests
- Results of additional tests, like hydrostatic, ultrasounds (UT), hardness, impact test, magnetic particles, metal graphic result etc.
EN 10204 2.1 Certification
EN 10204 2.1 certification is the lowest level of certification to EN 10204.In this the manufacturer, or mill, simply declares that he has produced the steel plates to the purchasers specification or order requirements. No evidence in the form of test results is included in the certificate. Likewise it is acceptable for the person in charge of manufacture to issue the certificate.
EN 10204 3.1 Certification
3.1 is a certificate issued by the mill which declares that the plates are in compliance with the specification and includes the test results.
Test results are validated by the mill’s in–house test department which has to be independent of the manufacturing department.
EN 10204 3.2 Certification
EN 10204 3.2 Certification is more rigorous and the certificate is prepared jointly by the mill’s inspection department and an independent 3rd party inspectors such as SGS,BV,ASBS.The certificate states that the plates are compliant with the relevant specification and the mill test certificate is included.
Summary of EN 10204 inspection documents
| Certificate Type | Document Type | Document Content | Document Validated By |
| EN10204 2.1 | Declaration of Compliance with the Order | Statement of compliance with the order | The Mill |
| EN10204 2.2 | Test Report | Statement of compliance with the order, with indication of results of non specifics inspection | The Mill |
| EN10204 3.1 | Inspection Certificate 3.1 | Statement of compliance with the order, with indication of results of specific inspection | The Mill’s authorised inspection representative who is independent of the manufacturing department |
| EN10204 3.2 | Inspection Certificate 3.2 | Statement of compliance with the order, with indication of results of specific inspection | The mill’s authorised inspection representative who is independent of the manufacturing department and either the purchasers authorised inspection representative or the inspector designated by official regulations |
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